Prawn NebulaIC 4628 - Gum 56
At about 6000 light-years, in the zodiacal constellation Scorpius and south of the star Antares, lays the IC4628 / Gum 56 nebula, also known as "Prawn Nebula" (because of its shape, better appreciated in pictures covering a larger field). With a total integration time of 4 hours (48 x 5 minutes individual subframes) this image was taken in La Banderita Observatory, La Pampa, Argentina during June 2018. The used equipment setup: Newton GSO 200 F4 with GPU Comma Corrector, Canon 600D/T3i modified and refrigerated (sensor measured and regulated temperature 0 -5°C), Astronomik CLS CCD filter, SkyWatcher NEQ6 mount, and homemade electronic focuser and anti-dew systems.
Technical data
Acquisition site | La Banderita Observatory, La Pampa, Argentina |
Acquisition date | 6-13-2018 |
Instrument | Newton GSO F4 200 with GPU coma corrector. |
Mount | Sky-Watcher NEQ6, managed by EQmod |
Guide | Off-Axis, with Lodestar camera |
Camera | Modified Canon 600D/T3i No IR Filter (Full Spectrum mod, using Astronomik MC Clear) Refrigerated (regulated temperature) |
Camera sensor temperature | -5°C (on-sensor measured and regulated) |
Filter | Astronomik Clip CLS CCD |
Integration | 48 subframes @ ISO 800, 5 minutes each (total integration time: 4 hours |
Calibration | 49 flats, 400 bias, 84 darks. |
Resolution | 1.1 arcsec/pixel 787 mm actual focal, 4.2 um x 4.2 um pixels |
Native size (each tile) | 5202 x 3465 pixels |
Cropped size | 5115 x 3354 pixels |
FOV | 1° 34' x 1° 1' |
Image center coordinates | RA: 16 h 58 min Dec: -40° 18' Rotation: 94° |
Acquisition | Maxim DL |
Process | PixInsight 1.8 |